I'm going to download meteorological information from the meteorology section of the hysplit software, but I get an error. What should I do to fix this problem?
You need to be more specific to get some help. Which meteorological information ? from which database ? which error exactly ? what is the format of the data needed ? time/spatial resolutions ? I precise that I am not a specific user of the hysplit software but I guess that you need to give more details if you expect efficient solutions.
I believe that HYSPLIT can use information from REANALYSIS, so you can download it from: (a) https://reanalyses.org, or (b) https://psl.noaa.gov/data/gridded/data.ncep.reanalysis.html. In these pages you can find a lot of meteorological information of different variables, both surface and height. Best regards.